Piezoelectric and dielectric properties of SCNN system ceramics - 文章详情页

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摘要：

By　traditional　sintering　process,　we　studied　the　piezoelectric　and　dielectric　properties　of　(CaxSr1-x)2　NaNb5O15　system　ceramics　(0.02x0.35).　The　results　show　that　it　has　better　piezoelectric　and　dielectric　properties　near　x=0.14　and　has　two　phase　transition　temperature.　One　is　nearly　280C,　and　the　other　is　nearly　-20C.　X-ray　diffraction　and　Raman　spectroscopy　show　that　it　is　tungsten　bronze　structure.　The　replacement　of　Ca2+　by　Sr2+　caused　the　lattice　distortion　which　results　in　the　enhancement　of　physical　properties.　Scanning　electron　microscope　photos　show　that　the　system　ceramics　is　very　dense.　It　is　a　lead-free　piezoelectric　ceramics　with　practical　prospects.

关键词：

Binary alloys Bronze Dielectric properties Piezoelectric ceramics Piezoelectricity Scanning electron microscopy Sintering Tungsten metallography

作者机构：

[ 1 ] [Wang, Yue]College of Applied Science, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Zhang, Yi-Cai]College of Applied Science, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Hu, Zhen-Jiang]College of Applied Science, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Gao, Xiang]College of Applied Science, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Guo, Xiao-Feng]College of Applied Science, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Jiang, Yi-Jian]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China

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